package com.qf.day08.homework.book;

public class Demo02 {

    public static void main(String[] args) {

        Book book = new Book();
        Book book1 = new Book();
        Book book3 = new Book();
        System.out.println(book);
        System.out.println(book1);
        System.out.println(book3);

        Book book2 = new Book("红楼梦", "曹雪芹", "CCC");
        Book book4 = new Book("水浒传", "施耐庵", "CCC");
        System.out.println(book2);
        System.out.println(book4);

    }

}
